Precise positioning device for joist barrow

Abstract

The utility model relates to the technical field of joist barrows, in particular to a precise positioning device for a joist barrow, which comprises a gate dam body, a joist barrow track arranged on the top end face of the dam body, a joist barrow arranged on the joist barrow track, the joist barrow comprises a truss, a moving device arranged at the bottom of the truss, the moving device comprises a stroke limiter, and a telescopic positioning device fixedly connected with the bottom end of the truss. The telescopic positioning device can stretch up and down and stretch left and right in the direction of a truss vehicle track, the gate dam body is fixedly connected with a plurality of positioning blocks corresponding to the telescopic positioning device, the truss vehicle moves for the first time through limitation of the stroke limiting device, and then the telescopic positioning device is matched with the positioning blocks to adjust the position of the truss vehicle. Accurate positioning can be achieved, the temporary bulkhead gate can be successfully assembled at a time, repeated adjustment is not needed, and time and labor can be effectively saved.

Description

Technical Field

[0001] The utility model relates to the technical field of gantry trucks, in particular to a precise positioning device for gantry trucks. Background Art

[0002] In some dams, maintenance gate slots are reserved for stacking maintenance gates for repairing working gates or desilting. The maintenance gates are heavy and require large lifting equipment for transportation. In addition, the gap between the maintenance gates and the maintenance gate slots is small, so high precision requirements are placed on the operation of the gantry truck. The existing gantry truck is used to transport the maintenance gates, which requires repeated manual adjustments and someone needs to follow the gantry truck to observe the alignment in real time. The operation is complicated and wastes manpower and time. Utility Model Content

[0003] The purpose of the utility model is to provide a gantry truck precise positioning device to solve the problems raised in the above background technology.

[0004] A precise positioning device for a gantry truck comprises a dam body, a gantry truck track is provided on the top surface of the dam body, a gantry truck is provided on the gantry truck track, the gantry truck comprises a truss, a moving device is provided at the bottom of the truss, the moving device comprises a travel limiter, a telescopic positioning device is fixedly connected to the bottom end of the truss, the telescopic positioning device can be telescoped up and down and left and right along the gantry truck track direction, and a plurality of positioning blocks corresponding to the telescopic positioning device are fixedly connected to the dam body.

[0005] Preferably, the telescopic positioning device includes a mounting seat, the mounting seat is a U-shaped structure, one end of the mounting seat is fixedly connected to the truss vehicle, and the other end of the mounting seat is provided with a mounting hole in the vertical direction, and a telescopic pile is slidably connected in the mounting hole.

[0006] Furthermore, a positioning wedge is provided at the lower part of the telescopic pile, and the positioning wedge includes two positioning rods and a driving gear. The two positioning rods are slidably connected in the telescopic pile along the horizontal direction, and the driving gear is rotatably connected in the telescopic pile, and the driving gear is arranged between the two positioning rods, and the driving gear is meshed and connected with the two positioning rods at the same time.

[0007] Furthermore, a telescopic motor is fixedly connected to the positioning wedge, and the telescopic motor is transmission-connected to the driving gear.

[0008] Furthermore, the positioning block is a U-shaped structure, and the bottom of the positioning block is provided with more than two through holes, and expansion bolts are arranged in the through holes to fix the positioning block to the dam body.

[0009] The utility model has the following beneficial effects compared with the prior art: the gantry crane can move the gantry crane as a whole roughly to the corresponding position through the moving device and the stroke limiter. At this time, the telescopic positioning device is located above the positioning block, and the width of the telescopic positioning block is smaller than the width of the positioning block opening. The stroke limiter can ensure that the telescopic positioning device can stably stay above the positioning block. Then the telescopic pile in the telescopic positioning device moves downward so that its lower end extends into the opening of the positioning block. Then the two positioning rods in the telescopic pile extend at the same time. As the two telescopic rods extend, when the telescopic rods are low to the side wall of the positioning block, the positioning section will give the gantry crane a reaction force to move the gantry crane to the side away from the side wall until the two telescopic rods simultaneously resist the side wall of the positioning block. At this time, the gantry crane and the positioning block are accurately positioned because the positioning block is fixedly connected to the dam body of the dam. Therefore, the precise positioning of the gantry crane and the dam body of the dam is achieved, so that the temporary gate hoisted on the gantry crane can be accurately inserted into the corresponding mounting groove on the dam body of the dam. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the application state of the utility model;

[0011] Figure 2 It is a detailed structural diagram of the telescopic positioning device in the utility model;

[0012] Figure 3 It is a second perspective structural schematic diagram of the telescopic positioning device in the utility model;

[0013] Figure 4 It is a schematic diagram of the positioning wedge connection structure in the utility model.

[0014] In the figure: 1. dam body; 11. mounting groove; 12. gantry track; 2. gantry; 21. truss; 22. moving device; 23. winch; 3. telescopic positioning device; 31. mounting seat; 32. telescopic pile; 321. slider; 322. slideway; 33. adjusting gear; 34. adjusting motor; 4. positioning wedge; 41. telescopic motor; 42. driving gear; 43. positioning rod; 5. positioning block. DETAILED DESCRIPTION

[0015] The following will be combined with specific embodiments and attached Figure 1-4 , clearly and completely describe the technical solutions in the embodiments of the utility model.

[0016] A precise positioning device for a gantry 2 comprises a dam body 1, a plurality of bridge piers are arranged at intervals on the dam body 1, the tops of the bridge piers are connected to form a working plane, a mounting groove 11 is arranged between two bridge piers, and a temporary maintenance gate can be slidably assembled in a vertical direction, a gantry 2 track 12 is arranged on the working plane at the top of the dam body 1, the gantry 2 track 12 is laid along the setting direction of the dam body 1, a gantry 2 is arranged on the gantry 2 track 12, and the gantry 2 is used to hoist the temporary maintenance gate.

[0017] The gantry 2 is a prior art. The gantry 2 includes a gantry 21 and a moving device 22 located at the bottom end of the gantry 21. The moving device 22 is cooperatively connected to the gantry 2 track 12 so that the gantry 21 can slide along the gantry 2 track 12. A winch 23 is fixedly connected to the top of the gantry 21. The winch 23 is a prior art and can lift a temporary maintenance gate that needs to be assembled and moved. The bottom end of the gantry 2 is fixedly connected to the moving device 22. The moving device 22 is a prior art. The moving device 22 includes a motor and a wheel. The wheel is cooperatively connected to the gantry 2 track 12, and the wheel can roll along the gantry 2 track 12. The wheel is transmission-connected to the motor, and the wheel is driven by the motor to move along the gantry 2 track 12. A travel limiter is provided on the motor. The travel limiter is a prior art and can control the travel distance of the gantry 2. However, the weight of the gantry 2 itself is large, and the travel limiter cannot perform more precise travel control on the gantry 2.

[0018] A telescopic positioning device 3 is fixedly connected to the bottom end of the truss 21, and a number of positioning blocks 5 are fixedly connected to the running line of the telescopic positioning device 3 on the dam body 1. The number of positioning blocks 5 is the same as the number of gate holes on the dam. The positioning blocks 5 and the mounting grooves 11 are arranged correspondingly and are located in the middle of the gate holes. The positioning blocks 5 are of a U-shaped structure. Two through holes are provided at the bottom of the positioning blocks 5. Expansion bolts are provided in the through holes to fix the positioning blocks 5 to the dam body 1. When the truss 21 stops at the middle position of the dam body 1 by relying on the travel limiter, the maintenance gate hoisted on the truss 21 cannot be accurately aligned with the mounting groove 11. The telescopic positioning device 3 needs to be adjusted in coordination with the positioning blocks 5 to adjust the truss 21 to a precise position so that the temporary maintenance gate hoisted on the truss 21 can be smoothly assembled into the mounting groove 11.

[0019] The telescopic positioning device 3 includes a mounting seat 31, which has a U-shaped structure. A mounting through hole is provided at the top of the mounting seat 31, and the mounting seat 31 is fixedly connected to the bottom position of the truss 21 by mounting bolts. A mounting hole is provided at the bottom end of the mounting seat 31 in the vertical direction. A telescopic pile 32 is slidably connected in the mounting hole. The telescopic pile 32 is provided with a slide groove 322 in the vertical direction. A slider 321 is correspondingly provided in the mounting hole. The slide groove 322 cooperates with the slider 321 for sliding connection to ensure the accuracy of the telescopic pile 32 when sliding. One side of the telescopic pile 32 is a rack structure. An adjusting motor 34 is fixedly connected to one side of the mounting seat 31, and an adjusting gear 33 is fixedly connected to the output shaft of the adjusting motor 34. The adjusting gear 33 is meshed and connected with the telescopic pile 32, and the telescopic pile 32 can be controlled by the adjusting motor 34 to move up and down. A positioning wedge 4 is provided at the lower part of the telescopic pile 32, and the positioning wedge 4 includes two positioning rods 43 and a driving gear 42. An upper and lower through hole is opened at the lower end of the telescopic pile 32 in the same direction as the setting direction of the rail 12 of the truss car 2, and the two positioning rods 43 are slidably connected in the through hole, and a rack is provided on the positioning rod 43 The telescopic pile 32 is also rotatably connected with a driving gear 42, and the upper and lower sides of the driving gear 42 are meshed with the two positioning rods 43. The rotation of the driving gear 42 will drive the two positioning rods 43 to extend outward or retract inward at the same time. A telescopic motor 41 is fixedly connected to one side of the telescopic pile 32, and the output shaft of the telescopic motor 41 is transmission-connected with the driving gear 42; the telescopic pile 32 is controlled to move downward by adjusting the motor 34, so that the lower end of the telescopic pile 32 extends into the groove of the positioning block 5, and then the telescopic motor 41 is controlled to make the two positioning rods 4 3 The telescopic pile 32 extends outward. When the telescopic rod on either side first contacts the inner wall of the positioning block 5, the telescopic rod cannot push the positioning block 5 to move, and then the telescopic pile 32 and the integrated gantry vehicle 2 are moved in the opposite direction by the reaction force of the positioning block 5, until the telescopic rod on the other side also contacts the inner wall of the positioning block 5. At this time, the telescopic pile 32 is accurately positioned at the middle position of the positioning block 5, which corresponds to the position where the hoisting maintenance gate faces the installation groove 11. At this time, the maintenance gate can be directly lowered to slide into the installation groove 11, so that accurate positioning can be achieved.

[0020] Except for the technical features described in the specification, all other technical features are known technologies to those skilled in the art.

[0021] In the present utility model, "up", "down", "left", "right", "front" and "back" are relative positions used to conveniently describe positional relationships, and therefore cannot be understood as absolute positions to limit the scope of protection.

[0022] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. A gantry vehicle precise positioning device, comprising a dam body, a gantry vehicle track is provided on the top surface of the dam body, and a gantry vehicle is provided on the gantry vehicle track, characterized in that: The truss vehicle includes a truss, a moving device is provided at the bottom of the truss, the moving device includes a travel limiter, a telescopic positioning device is fixedly connected to the bottom end of the truss, the telescopic positioning device can be telescoped up and down and left and right along the truss vehicle track direction, and a plurality of positioning blocks corresponding to the telescopic positioning device are fixedly connected to the dam body.

2. A gantry truck precise positioning device according to claim 1, characterized in that: The telescopic positioning device includes a mounting seat, which is a U-shaped structure. One end of the mounting seat is fixedly connected to the truss vehicle, and the other end of the mounting seat is provided with a mounting hole in the vertical direction. A telescopic pile is slidably connected in the mounting hole.

3. A gantry truck precise positioning device according to claim 2, characterized in that: A positioning wedge is provided at the lower part of the telescopic pile, and the positioning wedge includes two positioning rods and a driving gear. The two positioning rods are slidably connected in the telescopic pile along the horizontal direction, and the driving gear is rotatably connected in the telescopic pile. The driving gear is arranged between the two positioning rods, and the driving gear is meshed and connected with the two positioning rods at the same time.

4. A gantry truck precise positioning device according to claim 3, characterized in that: A telescopic motor is fixedly connected to the positioning wedge, and the telescopic motor is transmission-connected to the driving gear.

5. The precise positioning device for a gantry crane according to claim 4, characterized in that: The positioning block is of a U-shaped structure, and more than two through holes are provided at the bottom of the positioning block. Expansion bolts are arranged in the through holes to fix the positioning block to the dam body.

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